A base station apparatus configures, for each of configurations for channel state information reference signals included in a measurement configuration, a measurement offset to offset a result of measurement using the channel state information reference signal, based on the purpose of measurement. A mobile station apparatus adds the corresponding measurement offset included in the measurement configuration to a result of measuring each of the channel state information reference signals and judges whether a condition of a report configuration is satisfied.
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1. A communication system comprising: a mobile station apparatus; and a base station apparatus configured to notify the mobile station apparatus of a measurement configuration specifying measurement using a reference signal, wherein the measurement configuration includes a measurement object indicating at least a frequency serving as an object to be measured and respective configurations for a plurality of channel state information reference signals to be measured, and a report configuration specifying a condition for a measurement report, the base station apparatus is further configured to include in the measurement configuration, for each of the respective configurations for the plurality of channel state information reference signals, a corresponding first measurement offset to offset a result of measurement using the plurality of channel state information reference signals in the measurement configuration, and to include a second measurement offset applicable to each of a plurality of cells in the measurement configuration, and to notify the mobile station apparatus of the measurement configuration, and the mobile station apparatus is configured to add the respective first measurement offset to a respective result of measuring each of the plurality of channel state information reference signals and not to add the second measurement offset to the respective result to judge whether the condition is satisfied, the judgement being performed in a case where cell identifier information for the respective configurations for the plurality of channel state information reference signals are clearly notified, and in a case where the first measurement offset is included in the measurement configuration for the respective configurations for the plurality of channel state information reference signals, and the second measurement offset is included in the measurement configuration.
A communication system comprising a mobile device and a base station. The base station sends a measurement configuration to the mobile device, specifying how to measure reference signals. The configuration includes: a measurement object (frequency to measure), configurations for multiple channel state information reference signals (CSI-RS), and a report configuration specifying when to send a measurement report. For each CSI-RS configuration, the base station includes a first measurement offset, which adjusts the measurement result of that specific CSI-RS. The base station also includes a second measurement offset applicable to multiple cells. The mobile device adds the first offset to the measurement result of each CSI-RS, but does NOT add the second offset. The mobile device then determines if the reporting condition is met based on these adjusted measurements, provided cell IDs for the CSI-RS are present in the configuration.
2. The communication system according to claim 1 , wherein the base station apparatus is configured to classify the respective configurations for the plurality of channel state information reference signals into one or more groups and include information, which allows identification of one among the one or more groups, in the measurement configuration to notify the mobile station apparatus of the measurement configuration, and the mobile station apparatus is configured to carry out measurement using the plurality of channel state information reference signals of the one or more groups associated with the report configuration.
In the communication system described previously, the base station groups the CSI-RS configurations into one or more groups and sends information identifying the group to the mobile device as part of the measurement configuration. The mobile device then performs measurements using the CSI-RS belonging to the groups associated with the report configuration allowing for selective measurements based on the grouping.
3. A mobile station apparatus comprising: reception circuitry configured to receive, from a base station apparatus, a measurement configuration specifying measurement using a reference signal; and control circuitry, wherein the measurement configuration includes a measurement object indicating at least a frequency serving as an object to be measured and respective configurations for a plurality of channel state information reference signals to be measured, and a report configuration specifying a condition for a measurement report, the measurement configuration further includes, for each of the respective configurations for the plurality of channel state information reference signals, a corresponding first measurement offset to offset a result of measurement using the plurality of channel state information reference signals, the measurement configuration further includes a second measurement offset applicable to each of a plurality of cells, and the control circuitry is configured to add the respective first measurement offset to a respective result of measuring each of the plurality of channel state information reference signals and not to add the second measurement offset to the respective result to judge whether the condition is satisfied, the judgement being performed in a case where cell identifier information for the respective configurations for the plurality of channel state information reference signals are clearly notified, and in a case where the first measurement offset is included in the measurement configuration for the respective configurations for the plurality of channel state information reference signals, and the second measurement offset is included in the measurement configuration.
A mobile device comprises receiver circuitry and control circuitry. The receiver gets a measurement configuration from a base station specifying reference signal measurements. The configuration includes a measurement object (frequency), configurations for multiple CSI-RS to measure, and a report configuration specifying reporting conditions. The measurement configuration includes a first measurement offset for each CSI-RS to adjust its measurement results and a second measurement offset applicable to multiple cells. The control circuitry adds the first offset to each CSI-RS measurement, but does NOT add the second offset. The mobile device determines if reporting conditions are met using these adjusted CSI-RS measurements, provided cell IDs for the CSI-RS are present in the configuration.
4. The mobile station apparatus according to claim 3 , wherein the measurement configuration further has one or more groups, into which the respective configurations for the plurality of channel state information reference signals are classified, and includes information, which allows identification of one among the one or more groups, and the control circuitry is configured to carry out measurement using the plurality of channel state information reference signals of the one or more groups associated with the report configuration.
The mobile device from the previous description receives a measurement configuration that groups the CSI-RS configurations into one or more groups, with information identifying the group included in the configuration. The control circuitry then performs measurements using only the CSI-RS that belong to the groups associated with the report configuration, enabling selective measurements.
5. A measurement method for a mobile station apparatus to receive, from a base station apparatus, a measurement configuration specifying measurement using a reference signal, wherein the measurement configuration includes a measurement object indicating at least a frequency serving as an object to be measured and respective configurations for a plurality of channel state information reference signals to be measured, and a report configuration specifying a condition for a measurement report, the measurement configuration further includes, for each of the respective configurations for the plurality of channel state information reference signals, a corresponding first measurement offset to offset a result of measurement using the plurality of channel state information reference signals, the measurement configuration further includes a second measurement offset applicable to each of a plurality of cells, and the measurement method includes the step of adding the respective first measurement offset to a respective result of measuring each of the plurality of channel state information reference signals and not adding the second measurement offset to the respective result and judging whether the condition is satisfied, the judgement being performed in a case where cell identifier information for the respective configurations for the plurality of channel state information reference signals are clearly notified, and in a case where the first measurement offset is included in the measurement configuration for the respective configurations for the plurality of channel state information reference signals, and the second measurement offset is included in the measurement configuration.
A measurement method for a mobile device that receives a measurement configuration from a base station specifying reference signal measurements. The measurement configuration includes a measurement object (frequency), configurations for multiple CSI-RS to measure, and a report configuration specifying reporting conditions. The measurement configuration includes a first measurement offset for each CSI-RS to adjust its measurement results, and a second measurement offset applicable to multiple cells. The method involves adding the first offset to each CSI-RS measurement, but NOT adding the second offset. The mobile device determines if reporting conditions are met using these adjusted CSI-RS measurements, provided cell IDs for the CSI-RS are present in the configuration.
6. The measurement method according to claim 5 , wherein the measurement configuration further has one or more groups, into which the respective configurations for the plurality of channel state information reference signals are classified, and includes information, which allows identification of one among the one or more groups, and the measurement method includes the step of carrying out measurement using the plurality of channel state information reference signals of the one or more groups associated with the report configuration.
The measurement method described previously involves receiving a measurement configuration that groups CSI-RS configurations into one or more groups, with information identifying the group. The method then includes performing measurements using only the CSI-RS that belong to the groups associated with the report configuration, allowing for selective measurements.
7. An integrated circuit to be mounted in a mobile station apparatus, the integrated circuit comprising: reception circuitry configured to receive, from a base station apparatus, a measurement configuration specifying measurement using a reference signal; and control circuitry, wherein the measurement configuration includes a measurement object indicating at least a frequency serving as an object to be measured and respective configurations for a plurality of channel state information reference signals to be measured, and a report configuration specifying a condition for a measurement report, the measurement configuration further includes, for each of the respective configurations for the plurality of channel state information reference signals, a corresponding first measurement offset to offset a result of measurement using the plurality of channel state information reference signals, the measurement configuration further includes a second measurement offset applicable to each of a plurality of cells, and the control circuitry is configured to include a function of adding the respective first measurement offset to a respective result of measuring each of the plurality of channel state information reference signals and not adding the second measurement offset to the respective result and judging whether the condition is satisfied, the judgement being performed in a case where cell identifier information for the respective configurations for the plurality of channel state information reference signals are clearly notified, and in a case where the first measurement offset is included in the measurement configuration for the respective configurations for the plurality of channel state information reference signals, and the second measurement offset is included in the measurement configuration.
An integrated circuit for a mobile device includes receiver circuitry and control circuitry. The receiver gets a measurement configuration from a base station specifying reference signal measurements. The configuration includes a measurement object (frequency), configurations for multiple CSI-RS to measure, and a report configuration specifying reporting conditions. The measurement configuration includes a first measurement offset for each CSI-RS to adjust its measurement result and a second measurement offset applicable to multiple cells. The control circuitry includes a function to add the first offset to the measurement of each CSI-RS but not add the second offset when determining if the reporting conditions are met, provided cell IDs for the CSI-RS are present in the configuration.
8. The integrated circuit according to claim 7 , wherein the measurement configuration further has one or more groups, into which the respective configurations for the plurality of channel state information reference signals are classified, and includes information, which allows identification of one among the one or more groups, and the control circuitry is configured to include a function of carrying out measurement using the plurality of channel state information reference signals of the one or more groups associated with the report configuration.
The integrated circuit from the previous description receives a measurement configuration that groups CSI-RS configurations into one or more groups, including information identifying the group. The control circuitry includes a function to perform measurements using only the CSI-RS that belong to the groups associated with the report configuration, enabling selective measurements.
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May 16, 2013
June 20, 2017
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